Conveyer for driers



W. M. SCHWARTZ ET AL May 22, 1923.

CONVEYER FOR DRIERS 2 Sheets-Sheet 1 Filed March 11, 1920 May 22, 1923. Y I w. M. SCHWARTZ ET AL CONVEYER FOR DRIERS Filed March 11, 1920 2 Sheets-Sheet 2 Patented May 22, 1923. I

NITED STATES WALTER 1a. SCHWARTZ AND EEMANN EocATY, 0E PHILADELPHIA, PENNSYLVANIA,

AssIGNoBs TO THE PHILADELPHIA 'rEx'rILE MACHINERY COMPANY, OF PHILA- DELPHIA, PENNSYLVANIA, A coEPo A'rIoN OF PENNSYLVANIA.

ooNvEYEE FOR DRIERS.

Application filed March 11,

To all whom it may concern:

Be it 'known that we, WALTER M. SCHWARTZ and IlERMANN BOGA'IY, citizens of the United States and Russia, respectively (the .said Bogaty having declared his intentions of becoming a citizen of the United States), and residents of Philadelphia, Pennsylvania, have invented certain Improvements in Conveyers for Driers, of which the following is a specification.

Our invention relates to certain improve-- ments in drying machines of the type in which material is conveyed through a drying compartment while the warm air is being circulated in the compartment.

In this type of drier there is usually a drying chamber and a heating chamber, in which there are coils of steam pipes, or other heating means, and circulating fans, which circulate the air through the two compartments. The usual practice has been to carry the material to be dried by means of.

endless chains.

One object of our invention is to dispense with these chains and to substitute therefor reciprocating bars, which extend longi tudinally through the drying chamber andwhich are actuated by means which .raise the bars and reciprocate them, the pole, tray, or other device, being conveyed, first resting on stationary bars, then raised ofi of the bars and moved forward a given distance so that theyare fed intermittently through the drying chamber.

A further object of the invention is to arrange two sets of bars one under the other and so connected tothe operating means that the weightofmaterial carried by one set of bars will balance the weight carried by the other set. I 1

In the accompanying drawings:

Fig. 1 is a. longitudinal sectional view of a drying apparatus illustrating our inven-. tion;

Fig. 2 is a side view drawn to an enlarged scale, showing the upper and lower bars and the means for actuating them;

Fig. 3 is a transverse sectional view on the line 3-3 Fig. 2, showing the material carrying poles resting on the bars;

Fig. 4 is a transverse sectional View on the line 44, Fig. 2;

A duplicated.

1920. Serial No. 364,915.

Fig. 6 is a side view illustrating a modification showing the mechanism for actuating a single set of bars, and v Fig. 6 and Fig. 7 are detached views of the rails.

In the drying apparatus illustrated, 1 is the drying chamber. 2 is the heating 'chamber located above the drying chamberf 3, 3 are the fans mounted on vertical shafts 4 and located in a partition 5 separating the drying chamber from the heating cham ber. In the prbsent instance one fan forces the air down through the material, while the other fan draws the air up through the material. While we have illustrated a given type of drier in connection With'our invention, it will be understood that any of the O Idi5lai'y types of driers may be used, if desire At each side of the drying chamber are fixed rails 6. Located at one side of these rails are the movable rails 7. Means is provided for raising these rails .7, and moving them forward a given distance 'before they are depressed, consequently, a pole, such as 8, or a tray. which ismounted on the fixed rails 6, will be raised ofl" of the rails by the rails 7 and will be moved fora end. The movable rails-7 are carried by guide rollers 9 spaced a given distance I apart, accordlng to the length 'of the ape paratus, and these rollers are carried by angle bars 10, and are free to roll thereon between stops 10 The rails and bars are In the apparatus shown in Figs. 1, 2, 3 and 4, there are two sets of rails, one set being below the other set and in some instances more than two sets may be used according to circumstances. 12 is a power driven shaft having a cam, 11 at each end thereof, the cams are so set that they act in unison. 13 is a rectangularframe enclosing each cam 11, and actuated by the cam. Projecting from one side of the frame is an arm 14 connected at 15 to one arm of a lever 16 pivoted to the frame of the apparatus at 17. The other arm of the lever 16 is connected at 18 to a link 19 pivotally attached to the upper movable rail 7, and is also connected by a link 20 to a second lever 21 which is pivoted to the frame of the apparatus at 22 and the opposite end of the second lever is connected by a link 23 to the lower movable rail 7.

As the cams rotate the rails 7 are reciprocated longitudinally, and the pivots 17 for the levers 16 are adjustable so as to rcg .ulate the longitudinal movement of the rail.

Attached to the lower end of each frame 13 at 24 is a long link 25 which is connected to one-arm of a bell crank lever 26 mounted on a stud 27 secured to the frame, the arm 28 of the. lever being pivotally attached to a stud 29 on the upper bar 10 carrying the upperrail 7. The link 25 is connected by a long link 30 to one arm of a bell crank lever 31 pivoted at 32 to the frame and the arm 33 of this lever is attached to a stud 34 on the lower bar 10 carrying the'lower rail 7.

By the above arrangement the bars carrying the rails 7 are raised and lowered, and the parts are so timed, that the rails are raised then moved forward and then depressed so that the poles or trays carried by the rails will be moved forward intermittently.

In order to hold the poles 8 against longitudinal movement we secure an offset sheet metal plate 35 at the outer side of each rail 7 as shown in Fig. 3 and we preferably extend-the sheet metal under the rails and on the inner side thereof, although this is not essential. In the present instance we have. providedan extended shoe for each rail 7 which rest upon the rollers 9.

In Fig. 5 we. have shown a modification in which a single set of rails 7 and bars 10 are used. 3 I

In Fig. 6 we have shown the poles having rounded ends. When poles of this type are used, we prefer to serrate the upper 1 edge of the movable rails, as at 36, so that the poles will be positively moved forward. We also serrate the u per edge of the staf tionary rails 6, and t e feed end of these rails is preferably recessed at the upper edge, as at 37, Fig. 7. p

poles off of the stationary rails 6 and carrying them forward a given distance according to the adjustment of the mechanism. The poles are then lowered onto the fixed rails again and remain in this position until they are again raised, after the movable rails have completed one movement, when the above operation is repeated, so that the poles with the material thereon are intermittently traversed through the drying .chamber and when they reach the opposite end of the chamber, they are removed by hand, or by any suitable mechanism for the purpose.

We claim:

1. The combination in means for intermittentlyfeeding material through a drying apparatus, of a fixed rail at each side of the apparatus; a bar located at each side of the apparatus; loose rollers on said bars; a movable rail carried by the rollers of each bar; means for raising and lowering the bars with their rails; and means for reciprocating the movable rails, said rails being moved in one direction when raised to feed the .material through the apparatus.

2. The combination in a drier of a frame; a fixed rail mounted on the frame; a movable rail at the side of the fixed-rail; a bar carrying the movable rail; a shaft, a cam thereon; a rectangular cam frame actuated by the cam and so shaped as to move laterally and vertically; and having an arm; a .lever pivoted to the frame of the drier and connected to a lateral arm of the cam frame and a link connectin the lever with the movable rail, a second lever pivoted to the frame of the drier, one arm of the lever being connected to the bar, and a link connecting the other arm of the lever with the cam frame, so that as the cam frame is moved, the bar will be raised and lowered.

WALTER M. SCHWARTZ.

HERMANN BOGATY. 

